Calendar Creator — Raymond Rizkallah — It's not every day we receive a LISP file that’s more than 20 years old, but this month we have one. This calendar creation routine was authored in 1993, but it was recently tested in AutoCAD 2014 and still works fine. 

Drawing Purge Plus — Chris Wade — This is actually a subset of a more detailed routine Chris submitted for cleanup of architectural drawings, and between the two you should be able to use one as is or choose the purge components you need to build your own custom purge command.

Draw Metric Threads — Sidram Kankanameli — This is an easy routine for drawing metric thread schematics in AutoCAD. Colors are hard-coded but can easily be changed to meet your needs. 

Export Table of Lines and Text to Excel — Juan Villarreal — Years ago, before there were table objects in AutoCAD, we made tables with lines and text. Juan's routine allows you to take those old collections of lines and text and export them to Microsoft Excel for easier editing.